The Eclipse Nebula sub-project present the Grid widget, an alpha version which works great, i use it in my application to administrate reservation of swimming course. The JFace layer is not implemented yet but it’s on rails. But I don’t know if a GridViewer will be very useful because the needs of a spreadsheet are very large.
This is an example of Grid with header of columns and rows, column grouping, expand/collapse event of group column. The objective is to show the schedules in columns and the week days in rows, each column is composed of 3 sub-columns showing the total capacity, the availability and the sold place. The total capacity column can be desactivated :
public Grid createGrid(Listin_schedules, Composite in_composite) { // Grid creation Grid l_grid = new Grid(in_composite, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); // show column header l_grid.setHeaderVisible(true); // show row header l_grid.setRowHeaderVisible(true); // enable cell selection l_grid.setCellSelectionEnabled(true); GC l_gc = new GC(l_grid); // list of swimming course schedules for (ScheduleType l_scheduleType : in_schedules) { // create column group with dynamic column (TOGGLE) GridColumnGroup l_scheduleColumn = new GridColumnGroup(l_grid, SWT.TOGGLE); // column group header name l_scheduleColumn.setText(l_scheduleType.getLabel()); final int l_colWidth = l_gc.stringExtent(l_scheduleType.getLabel() + " <<").x + 6; // initialize state (collapse) l_scheduleColumn.setExpanded(false); // listen expand event l_scheduleColumn.addListener(SWT.Expand, new Listener() { public void handleEvent(Event event) { int l_width = l_colWidth / 3; if (l_width < 20) { l_width = 20; } for (GridColumn l_column : ((GridColumnGroup) event.widget).getColumns()) { l_column.setWidth(l_width); } } }); // listen collapse event l_scheduleColumn.addListener(SWT.Collapse, new Listener() { public void handleEvent(Event event) { int l_width = l_colWidth / 2; if (l_width < 20) { l_width = 20; } for (GridColumn l_column : ((GridColumnGroup) event.widget).getColumns()) { if (l_column.isSummary()) { l_column.setWidth(l_width); } } } }); int l_width = l_colWidth / 2; if (l_width < 20) { l_width = 20; } // create columns group GridColumn l_capacity = new GridColumn(l_scheduleColumn, SWT.CENTER); l_capacity.setText("C"); l_capacity.setWidth(20); l_capacity.setCellSelectionEnabled(false); // collapsed ? no l_capacity.setSummary(false); l_capacity = new GridColumn(l_scheduleColumn, SWT.CENTER); l_capacity.setText("V"); l_capacity.setWidth(l_width); l_capacity.setCellSelectionEnabled(false); // collapsed ? yes l_capacity.setSummary(true); l_capacity = new GridColumn(l_scheduleColumn, SWT.CENTER); l_capacity.setText("L"); l_capacity.setWidth(l_width); l_capacity.setSummary(true); l_capacity.setData(l_scheduleType); } l_gc.dispose(); //l_grid.pack(true); return l_grid; }
The Grid binding is realise via the GridItem object
// GridItem creation l_gridItem = new GridItem(l_grid, SWT.CENTER); // row header name l_gridItem.setHeaderText(l_headerText); // set value by index column l_gridItem.setText(, );
It possible to merge cell of a same line e.g.:
e.g.:
l_gridItem.setColumnSpan(0, in_grid.getColumnCount());
And to get the selection :
Point[] l_selections = l_grid.getCellSelection();
for (Point l_selection : l_selections) {
// get GridItem
l_grid.getItem(l_selection.y);
// get GridColumn
l_grid.getColumn(l_selection.x)
}
